Question

A spring is fixed at the bottom end of an incline of inclination 37 degrees. A small block of mass 2 kg starts slipping down the incline from a point 4.8m away from the spring. The block compresses the spring by 20 cm, stops momentarily and then rebounds through a distance 1 m up the incline. Find (a) the friction coefficient between block and plane and (b) The spring constant 'k' ... This question made me bang my head on wall ! :(

Answer 1

What part of the problem are you getting stuck on? Have you done any more work than what you've shown?

Answer 2

I thought the total distance travelled by block is 5 m (4.8+0.2)

Answer 3

Initial Potential energy is mgh, h is 3 (37-53-90 triangle)
So i converted that energy into spring potential energy = 1/2 kx^2

Answer 4

I don't get the friction part

Answer 5

The friction is a non-conservative force that will always be in the direction opposite to movement. You can add it to your free-body diagram the same as any other force.

Answer 6

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